LEMON Manuals: Even more car manuals for everyone
Home >> Subaru >> 2008 >> Tribeca Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Diagnostic Trouble Code (DTC) Detecting Criteria (H6DO) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P0638 Throttle Actuator Control Range/Performance (Bank 1) >> Diagnostic Method

Diagnostic Method

Judge as OK and clear the NG when the malfunction criteria below are met.

Judgment Value 

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE

Malfunction Criteria Threshold Value
Difference between target opening angle and actual opening angle 3° or less
Output duty to drive circuit 95% or less

Time Needed for Diagnosis: 

Details of Judgment Value 

Fig 1: Identifying Judgment Value Reference Graph
G05664248Courtesy of SUBARU OF AMERICA, INC.

Details of Judgment time  (The actual opening angle ≤ target opening angle is always 1000 milliseconds)

Fig 2: Identifying Details Of Judgment Time Reference Graph For Opening Angle
G05664249Courtesy of SUBARU OF AMERICA, INC.

Malfunction Indicator Light Illumination:  Illuminates as soon as a malfunction occurs.